I'm watching many people worried about settlement funds.
Yes, you have to show six months worth of balances, but your FINAL balance must match at least the minimum amount required, not the entire period. However, the six month statements are required exactly to know if there's any usual movement to the applicant's account. If you amassed those funds during this period, it is highly recommended that you attach any documents proving the source of the money - car sale document, real estate document, gift deed or any other transaction document that proves the source of the funds. Remember that everything that isn't in english or French must have a certified translation attached.
When I visited the OINP portal, the HCP option was available for registration. They're probably closing and opening periodically to avoid an overload.